Question

Find an example of a confidence interval for a proportion in the media or scholarly literature (do not use a statistics textbook or website/article that is teaching or demonstrating statistics to find the example).

At the very least it must include either the lower and upper bounds or a point estimate with a margin of error. Make sure you have a Proportion confidence interval and NOT a CI for the mean, odds ratio, hazard ratio, or relative risk as these will result in having to REDO the assignment

(a) Include a digital photo/screenshot of the original appearance of the confidence interval and a link to the website (or citation) where it can be found.

(b) Write the confidence interval in the form (lower bound, upper bound). If there are multiple confidence intervals, just pick one.

(c) State the population parameter this confidence interval is trying to estimate.

(d) State the confidence level and sample size. If no confidence level is given assume it is 95 % .

(e) Use the point estimate, confidence level, and sample size to calculate the confidence interval and compare your calculated values with those published in the article.

(f) State what the sample and population were for the study. Infer this information if it is not provided

(g) Comment on the source for the data, the publisher of the CI, and their purpose for doing so.

Put the above in a document and upload your complete file below.

Answer 1